/*@
 */
int main ()
{
  int i;
  int j;
  int k;
  
  i = 1;
  j = 1;
  k = 0;
  
  while (k<100)
  {
    if (j<20)
    {
      k = i;
      k = k + 1;
    }
    else
    {
      j = k;
      k = k + 2;
    }
  }
  
  return j;  
}
/*@
 */